EnergyGuard™ Polyiso Insulation
Proven Performance/Great Value
Polyiso is a closed-cell, rigid foam board insulation used in roof and wall assemblies within commercial and residential buildings of all types. Because of its high thermal performance, it is the product of choice for energy-aware architects, specifiers, builders, building owners, contractors and consumers.
EnergyGuard™ and EnergyGuard NH are available with a variety of facers suitable for a wide range of roofing assemblies.


Performance dashboard
Features & functionality
- UV testing–Greater than 4.6x the industry standard
- Long-term weathering
- Excellent long-term heat and UV resistance
- Excellent seam strength
Visit GAF for more product information:
CSI MasterFormat® #07 21 00
- For specification information, refer to:
- Check our LEED v4 Playbook and GAF.com/greenarchitects
- For spec help call: 877-GAF-ROOF, option 3
This product does not contain any ingredients on the Living Building Challenge Red List.
This product does not contain any ingredients on the Living Building Challenge Red List.
How we are making it healthier
GAF is a founding manufacturer of the Health Product Declaration® since 2011 and has supported the launch of the HPD Open Standard and HPD Collaborative.
GAF has published Health Product Declarations (HPDs) on our TPO and ISO products, which means there are no secrets about the materials you’re using on your roofing project.